As per SDK doc, IDeckLinkInputCallback::VideoInputFrameArrived method might not provide video frame and it can be null. In that case, given stream_time can be invalid. So, we should not try to convert GST_CLOCK_TIME_NONE by using gst_clock_adjust_with_calibration() Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2337>